Table 4.

Auto-ethnography stages

#	Experiment stage	Main objective
1	Feasibility study Identification of the actors and preliminary technical hypothesis	A feasibility study on the application if DIY method for food quality assessment Selection of pool of actors both internally the JRC and in the DIY community
2	Identification of possible areas of application	Review of scientific literature on a selection of applicative cases (detection of nitrites/nitrates through semi quantitative colour-based spectrophotometry, UV and IR Arduino-based spectrophotometry)
3	Hands on testing	Prototyping of different practical possibilities. Fig. 1 shows an. Arduino based kit for the detection of nitrite/nitrate in food samples. A TCS3200 colour sensor in a controlled dark room is employed to read commercially available test strips.s In a second stage we investigated the reproducibility of these strips through DIY means, although we did not proceed with the actual realization.
4	Collection and analysis of results and actors ‘interactions	Data collection (oral and written communications with actors, online and offline material)

^aSee e.g. http://www.lamotte.com/en/food-beverage/test-strips/2996.html. Retrieved 12/10/2018